LANSING, MI -- A Lansing man will spend at least 21 months in prison for holding up three stores in a five-day span in July.

Armed Walker, 24, was sentenced by Ingham Circuit Judge Jim Jamo to 21 months to 10 years in prison, in addition to court costs, on Wednesday, Feb. 27. He was given credit for 231 days served.

Walker pleaded guilty last monthto armed robbery as part of a plea bargain with prosecutors, who agreed to drop two counts of armed robbery in exchange for his guilty plea.

Lansing police say Walker began his robbery spree on the afternoon of Saturday, July 7, when he held up Mario's Market, 6200 S. Martin Luther King Jr. Blvd. Almost exactly 24 hours later, he did the same at South Washington Road Food Market, 6065 S. Washington Ave.

Police arrested Walker on Wednesday, July 11, after they say he robbed a business in the 800 block of West Miller Road. On all three occasions, Walker masked his face with a bandana, wore latex gloves and wielded a knife, according to police.

Sentences for armed robbery convictions must be served concurrently, Michigan law stipulates, meaning a conviction in Walker's case would have been the same regardless of the number of armed robbery counts.